"ENVIRO" - ENVIRONMENTAL/DEVELOPMENTAL INNOVATIONS
		INFO BIO NANO MACRO ENVIRO Environmental and Developmental Innovations at MIT Alliance for Global Sustainability Digital Nations Center for Energy and Environmental Policy Research Laboratory for Energy and the Environment Center for Technology, Policy, and Industrial Development Ideas Competition Industrial Performance Center Globalization Project International Development and Regional Planning Group MIT International Science and Technology Initiatives			NEW ENGINE TO REPLACE DIESEL Bill Green Department of Chemical Engineering The $73 billion world market for diesel engines is a plum incentive for developing a less polluting alternative engine. Diesel engines produce a large fraction of the air pollution in the developed world, including particulates strongly correlated with mortality. Regulators would likely prohibit them if a cost-effective alternative existed. This project proposes such an alternative. It explores a new type of engine, comparable to a diesel in cost and energy efficiency but with orders of magnitude lower emissions. The engine is based on an existing technology—the fuel-efficient, low-emission homogeneous charge compression ignition (HCCI) engine. It has a special design, however, that makes it more robust than current HCCI engines by eliminating the need for an expensive and technically challenging active control mechanism.
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